• Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

Cyclical soft tapping sound (almost like abs)

BIG1RED9

NAXJA Forum User
Location
Coarsegold CA
Hi all,

I just installed a new radiator and swapped everything to a open system. I now notice a sound that takes place under moderate braking. It has a faint cycle or pulse sound (only).

MY investigation into pieces that may gave3 been broken or disconnected allowed me to find the rubber plug that which the heater vacuum and a black vacuum hose connect to, at the point where the heater core connects through the firewall.

1. I would like to understand what those hoses do and fix that problem (have no idea what to call the part and or have no part number). I have looked at the parts manual and can't find it in any of the groups I checked into.

2. I am wondering what is the source of this new pulse noise and I want to fix it.

I hate new noises in an older vehicle, especially when it hasn't aged with me.

Thanks in advance
Don
87 Wagoneer Limited 187,000 miles
 
Back
Top